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CVE-2026-27962VulnerabilityPublished Updated

SUSE authlib · Security update for python-Authlib

Affects SUSE authlibSource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited · fixed in SUSE package updates : patch SUSE authlib as a priority.

Data as of 31 Oct 2026, 20:20 UTC

Severity
Critical

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.5.3, 1.17.0

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.

What to do

Upgrade authlib to 1.5.3; kimi-cli to 1.17.0.

Affected software

ProductAffectedFixed in
PyPIauthlibpkg:pypi/authlibOther threatsAffected
  • <1.5.3
Fixed in
  • 1.5.3
Homebrewkimi-clipkg:brew/kimi-cliOther threatsAffected
  • >=0.40 <1.17.0
Fixed in
  • 1.17.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

This update for python-Authlib fixes the following issues: Changes in python-Authlib: - CVE-2026-27962: JWS `deserialize_compact()` allows for signature bypass by accepting user-controlled embedded JWK as verification key (bsc#1259738) - CVE-2026-28490: cryptographic padding oracle in JWE RSA1_5 key management algorithm (bsc#1259736) - CVE-2026-28498: fail-open in behavior OIDC hash validation allows for bypass mandatory integrity protections (bsc#1259737)

References

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